A 980-nm Yb-doped fiber MOPA source and its frequency doubling

A continuous-wave (CW) master oscillator-power amplifier (MOPA) fiber source, tunable around 978 nm, was frequency-doubled to 488.7 nm. Both the laser and the amplifier were made with cladding-pumped jacketed air-clad Yb-doped fibers. The MOPA generated up to 2.7 W of power in an output beam with an...

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Veröffentlicht in:	IEEE photonics technology letters 2004-04, Vol.16 (4), p.1032-1034
Hauptverfasser:	Soh, D.B.S., Codemard, C., Wang, S., Nilsson, J., Sahu, J.K., Laurell, F., Philippov, V., Jeong, Y., Alegria, C., Baek, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplifiers Beams (radiation) Biomedical optical imaging blue Crystals Diodes fiber laser Fiber lasers Fibers Frequency Frequency doubling Gaussian generation laser Lasers master oscillator-power amplifier (MOPA) Optical fiber amplifiers Optical fiber polarization Optical harmonic generation Optical pumping Phosphates potasium titanyl phosphate (KTP) Power generation Tunable circuits and devices
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Beschreibung
Zusammenfassung:	A continuous-wave (CW) master oscillator-power amplifier (MOPA) fiber source, tunable around 978 nm, was frequency-doubled to 488.7 nm. Both the laser and the amplifier were made with cladding-pumped jacketed air-clad Yb-doped fibers. The MOPA generated up to 2.7 W of power in an output beam with an M/sup 2/ value of 1.8. This was frequency-doubled in a periodically poled potassium titanyl phosphate crystal at room temperature, in a single-pass configuration. The generated blue light had a CW power of 18.1 mW, a nearly Gaussian spatial intensity profile, and an M/sup 2/ value of 1.7.
ISSN:	1041-1135 1941-0174 1941-0174
DOI:	10.1109/LPT.2004.824952